Definitions of lion:

noun: large gregarious predatory feline of Africa and India having a tawny coat with a shaggy mane in the male
noun: a celebrity who is lionized (much sought after)
noun: (astrology) a person who is born while the sun is in Leo
noun: the fifth sign of the zodiac; the sun is in this sign from about July 23 to August 22
name: A surname (very rare: popularity rank in the U.S.: #21435)